nemunaire/waveshareteam-e-Paper
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significant increase of speed for 7in5 and 7in5_HD

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dev-ng 2021-01-14 21:19:52 +01:00
commit c950cc04c0
3 changed files with 89 additions and 112 deletions
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104
RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd7in5.py
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@ -65,6 +65,12 @@ class EPD:
epdconfig.spi_writebyte([data])
epdconfig.digital_write(self.cs_pin, 1)
def send_data2(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
logging.debug("e-Paper busy")
while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
@ -78,17 +84,13 @@ class EPD:
self.reset()
self.send_command(0x01) # POWER_SETTING
self.send_data(0x37)
self.send_data(0x00)
self.send_data2([0x37, 0x00])
self.send_command(0x00) # PANEL_SETTING
self.send_data(0xCF)
self.send_data(0x08)
self.send_data([0xCF, 0x08])
self.send_command(0x06) # BOOSTER_SOFT_START
self.send_data(0xc7)
self.send_data(0xcc)
self.send_data(0x28)
self.send_data([0xc7, 0xcc, 0x28])
self.send_command(0x04) # POWER_ON
self.ReadBusy()
@ -121,72 +123,50 @@ class EPD:
return 0
def getbuffer(self, image):
logging.debug("1234")
buf = [0x00] * int(self.width * self.height / 4)
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
logging.debug('imwidth = %d imheight = %d ',imwidth, imheight)
img = image
imwidth, imheight = img.size
halfwidth = int(self.width / 2)
buf = [0x33] * halfwidth * self.height
if(imwidth == self.width and imheight == self.height):
for y in range(imheight):
for x in range(imwidth):
# Set the bits for the column of pixels at the current position.
if pixels[x, y] < 64: # black
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
buf[int((x + y * self.width) / 4)] |= 0x40 >> (x % 4 * 2)
else: # white
buf[int((x + y * self.width) / 4)] |= 0xC0 >> (x % 4 * 2)
img = img.convert('1')
elif(imwidth == self.height and imheight == self.width):
for y in range(imheight):
for x in range(imwidth):
newx = y
newy = self.height - x - 1
if pixels[x, y] < 64: # black
buf[int((newx + newy*self.width) / 4)] &= ~(0xC0 >> (y % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[int((newx + newy*self.width) / 4)] &= ~(0xC0 >> (y % 4 * 2))
buf[int((newx + newy*self.width) / 4)] |= 0x40 >> (y % 4 * 2)
else: # white
buf[int((newx + newy*self.width) / 4)] |= 0xC0 >> (y % 4 * 2)
return buf
img = img.rotate(90, expand=True).convert('1')
imwidth, imheight = img.size
else:
logging.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
# return a blank buffer
return buf
pixels = img.load()
for y in range(imheight):
offset = y * halfwidth
for x in range(1, imwidth, 2):
i = offset + x // 2
if(pixels[x-1, y] > 191):
if(pixels[x, y] > 191):
buf[i] = 0x33
else:
buf[i] = 0x30
else:
if(pixels[x, y] > 191):
buf[i] = 0x03
else:
buf[i] = 0x00
return buf
def display(self, image):
self.send_command(0x10)
for i in range(0, int(self.width / 4 * self.height)):
temp1 = image[i]
j = 0
while (j < 4):
if ((temp1 & 0xC0) == 0xC0):
temp2 = 0x03
elif ((temp1 & 0xC0) == 0x00):
temp2 = 0x00
else:
temp2 = 0x04
temp2 = (temp2 << 4) & 0xFF
temp1 = (temp1 << 2) & 0xFF
j += 1
if((temp1 & 0xC0) == 0xC0):
temp2 |= 0x03
elif ((temp1 & 0xC0) == 0x00):
temp2 |= 0x00
else:
temp2 |= 0x04
temp1 = (temp1 << 2) & 0xFF
self.send_data(temp2)
j += 1
self.send_data2(image)
self.send_command(0x12)
epdconfig.delay_ms(100)
self.ReadBusy()
def Clear(self):
buf = [0x33] * int(self.width * self.height / 2)
self.send_command(0x10)
for i in range(0, int(self.width / 4 * self.height)):
for j in range(0, 4):
self.send_data(0x33)
self.send_data2(buf)
self.send_command(0x12)
self.ReadBusy()